Dust-collector.



R. H." REGENTS.

DUST COLLECTOR. APPLICATION FILED JUNE 18, I914.

Lmfijmqh Patented July 6, 1915.

2 SHEETS-SHEET I;

R. H. REGENTS.-

DUST COLLECTOR APPLICATION FILED JUNE I8. I914.

LMfifiUI PatentedJuly 6,1915.

2 SHEETS-SHEET 2.

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FlllTE STATEN AT RICHARD II. REGENTS, OF MINNEAPOLIS, MINNESOTA, ASSIG-NOR 0F ONE-HALF TU HELEN GFBURKE, OF MINNEAPOLIS, MINNESOTA.

DUST-COLLECTOR.

inaavoa.

Specification of Letters Patent.

Patented July 6, 1915.

. Application filed June 18, 1914. Serial No. 845,963.

To all whom it may concern:

Be it known that I, RI H'ARD H. REGENTS, citizen of the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful lmprovementsin Dust-Collectors of which the following is a specification,

The object of my invention is to provide a flour dust Collecting apparatus of simple, economical construction and one in which the use of cloth is entirely eliminated.

A further object is to provide a dust collector that is readily accessible for examination or repairs.

Other objects of the invention will appear from the followingdetailed description.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a side elevation of adust collector embodying my invention, Fig. 2 is a vertical sectional view of the same, Fig. 3 is a diagrammatic view, illustrating the preferred connections of the dust collecting machine with the blast fan and trunk that communicates with the purifiers or similarmachines, Fig. 1 is a vertical sectional view, taken on a line at right angles substantially to the section line of Fig. 2, Fig 5 is a detail sectional view,

showing the preferred means for driving the perforated cylinder scraper blades, Fig. 6 is a detail sectional View of the driving mechanism. a r

In the drawing, 2 represents a housing in which the. dust collecting apparatus is mounted. In the upper part of the casing are rings 3 having heads 4 provided with dust intakepipes 6 projecting upon opposite sides of the machine. These intake pipes communicate through a blast fan F with a trunk T having an open end and branch pipes P leading to purifiers or other milling machinery from which it is desired to remove'the dust. The heads and rings are boltedtogether and are seated upon the casing and a partition plate 7 extends across the casing between the opposite walls thereof and deflects the currents of air outwardly and downwardly against the walls of the casing. The rings 3 have flanged outer portions 8, between which and the flangedrings 8 annular chambers 9 are formed to receive gear rings 10 in which ring pins 11. are mounted to project through slots 12 in said heads into the space between them. Rings 13 are mounted on said pins and carry scraper blades 14: which are adapted to sweep over the inner surfaces of a perforated cylinder 15 that is seated on the flanges 8 and encircles them and the rings 3. The space within this cylinder communicates with the dust laden air intake pipes 6. A driven shaft 16 has pinions 17 meshing with the gears 10 to revolve them and the scraper blades 14;. The perforated cylinder, as shown in Fig. 2, extends downwardly into the open top of the casing 2 and is partially encircled by a wall 18 spaced from the perforated cylinder to form a passage 19, a CllVlSlOn wall 20 being provided in said passage between the wall 18 and the cylinder. The space 19 communicates through openings 21 with chambers 22 formed in the casing 2 upon opposite sides of the partition plate 7, and these chambers communicate through openings 23 with the outer air. v V

The dust laden air, blown in through the pipe 6, will enter the perforated cylinder and be blown out through the holes therein into the spaces 19, clogging of the holes being prevented by the action of the blades 14: on the inner surface of the cylinder. The curved wall 18 will direct the currents of dust laden air downwardly and inwardly against the partition plates 7 from which they will be deflected to the walls of the casing, and expanding in the chambers 22, a considerable portion of the dust will be precipitated. Beneath the partition plate 7 is a second cylinder24c, having outer imper forate heads 25 and inner perforate heads 26. Between these headsv chambers 27 are formed, having spouts leading to the open air, and also provided with curved discharge passages 29 communicating with the casing 30 in which a screw conveyer 31 is mounted.

The bottom of the conveyor boX has an opening 30 therein for the discharge of the flour dust into a'receptacle for second grade flour. The cylinder 24; between the heads 26 has openings 32 in the bottom thereof, upon opposite sides of a division plate 33 and be tween the walls of the housing and the cylinder passages 34: are formed, communicating with the openings 32 and also with openings dust as the air currents expand and in the upper part of the chamber I provide a suction pipe 37 having a slotted opening 88 therein communicating with the chamber 36, said pipe connecting with the dust collect- -ing trunk on the suction side of the fan F,

separated from the dust.

In various ways the tlon herein shown and described may be as indicated in the diagrammatic view. One portion of the machine receives the dust laden air blown by the fan, while another portion is subjected to the drawing or sucking action of the fan to remove the air when The volume of air in the chamber 36 being considerable and more than will pass off through the pipe 37, a portion will flow through the perforations in the heads 26 into the chambers 27, where a further precipitation of the dust will be effected, the free air finally passing out through the spouts 28.

In the operation of the machine, the blast fan will blow the dust laden air into the upper cylinder and'through the perforations therein, where partial separation will. be

effected, the dust dropping down through the chambers 22 and the passages 3 f into the conveyer box in the bottom of the machine. The air currents being deflected back and forth between the partition plate 7 and the wall of the easing, will makefurther preci-pitation of the dust held in suspension and upon passing downto the bottom of the lower cylinder will be deflected upwardly into the chamber therein and finally drawn off through the suction pipe 37 to the suction side of the casing. I am thus able to perform a thorough separation of the flour dust from the air wlthout the use of cloth, bolts or screens.

details of construcmodified and still be within the scope of my invention. I

I claim as my invention:

1. dust collector comprising a casing, a cylindrical member therein having perforatedwalls and a blast trunk communicating'therewith for delivering dust laden air to said member, a wall partially encircling said member and spaced therefrom to form a passage into which the dust laden air is driven through the perforations of said member, said casing having a chamber beneath said passage communicating therewith, and a dust conveyerboX communicating with said chamber.

2. A; dust collector comprising a casing,

a member mounted-therein and having perforations in its walls, a blast pipe communieating with said member for delivering the dust laden air thereto, a wall partially encircling said member and spaced therefrom, said casing having a chamber therein communicating with said space, a partition plate depending from said member and dividing said chamber and against which partition plate the dust laden air is driven from between said member and said wall.

8. A dust collector comprising a casing, a perforated cylindrical member mounted therein and having blast pipes through which the dust laden air is blown into said member, scrapers mounted to sweep the surface of said member, a wall encircling the upper portion of said member and spaced therefrom and open at the bottom within said casing, and a dust receiving receptacle arranged in the lower portion of said casing.

4. A dust collector comprising an upper perforated member having pipe connections for blowing the dust laden air into said member, a wall mounted to direct the air currents downwardly within said casing after passing through said perforated member, a second perforated member disposed in the lower portion of said casing and having an intake opening in its lower walls communicating with the passage leading from said upper perforated member, and a suction pipe communicating with the upper portion of said second perforated member.

5. A dust collector comprising a casing, means in the upper part of said easing into which the dust laden air is blown, means for directing the air currents downwardly within said casing, a cylindrical member in the lower portion of said casing having an air intake opening in its lower walls into which the air currents are directed from the upper portion of said casing, and a suction pipe communicating with said cylindrical member through the upper walls thereof.

6. A dust collector comprising a casing, a member mounted in the upper portion thereof and having a blast pipe intake through which the dust laden air is directed into said member, said casing having a chamber therein communicating with said member, a dust receptacle communicating with said chamber, a second member disposed below said first named member and having openings in its lower walls to receive the air from said chamber, and a suction pipe leading from said second member.

7. A dust collector comprising a casing, a dust separating device comprising an inner perforated member and a wall encircling and spaced from said member, a blast fan having a pipe connection with said perforated member, an air trunk for connection with milling machines, a second dust separating device within said casing communieating with said first named member for receiving the air therefrom, and a second pipe communicating with said second member and with said trunk.

8. A dust collector comprising a casing, a perforated member mounted in the upper portion of said casing, a blast fan having a pipe connection with said perforated memher and an air trunk for connection with milling machines, a second perforated member within said casing communicating with said first named member for receiving the air therefrom, and a suction pipe communicating with said second member and with said trunk on the opposite side'of said fan from its pipe connection with said first named member.

9. A dust collector comprising a casing, a perforated separating means in the upper part of said casing into which the dust laden air is blown, means for directing the air currents downwardly within said casing, a

member in the lower portion of said casing having an air intake opening in its lower walls into which the air currents are di: rected from the upper portion of said casing, said cylindrical member having perforated inner heads and imperforate outer heads with circulating chambers formed between them, said chambers having gravity dust discharge openings in their lower walls and also provided with air outlet openings, and a dust receptacle arranged below the opening leading to said cylindrical member and the gravity discharge openings of said circulating chambers.

10. A dust collector comprising a casing having an open top, a dust separating device mounted within said open top and spaced from the walls of said casing, an air trunk communicating with said separating device, means for directing the dust laden air downwardly within said casing'and past the space between said casing and said dust separating device, a second separating device arranged in the bottom of said casing and having ports to receive the dust laden air from said first named separating device, and a suction pipe leading from said second separating device to said air trunk.

11. A dust collector comprising a casing, a perforated member mounted therein and having blast pipes through'which the dust laden air is blown into said member, means for sweeping the surface of said member, a wall partially encircling said member and spaced therefrom and open at the bottom within said casing, and a dust receptacle arranged to receive the dust discharged by said wall through the opening therein.

12. A dust collector comprising a casing, a dust separating device, including a perforated member and an inlet trunk communicating with said member for delivery of the dust thereto, means encircling said member and against which the air is blown through said perforated member, and means having a chamber whereto the air is directed from said perforated member, and a suction pipe communicating with said chamber and with said trunk.

In witness whereof, I have hereunto set my hand this 8 day of June 1914.

RICHARD H. REGENTS. Witnesses:

GENEVIEVE E. SORENSEN, EDWARD A. PAUL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, I). 03" 

